had one similar many years ago was always a problem of gate tracking straight. the wheels also always gave problems.
i went with a gate with two V groove wheels welded to the gate at bottom with angle iron in concrete for it to roll on. a pair of rollers at top for the gate to slide...
skylights for more lighting its way to dark with doors down and i dont like to use lights due to cost , wider building made it 24 ft wide now wish i had it at 40 ft . not enough room so now i am considering garden sheds to store alot of items that is taking up floor space
Jen
watch craigslist as well as at times there is OSB listed at very low prices. my last purchase was 4ft x 10 ft sheets of OSB for 10 dollars each. person had 80 sheets but left them out in the rain , fortunately 40 of them was still very nice condition.
Jen